package JEE;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(filterName = "JEE.Filter", urlPatterns = "/ChatRoom")
public class Filter implements javax.servlet.Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        System.out.println("in filter");
        HttpServletRequest request = (HttpServletRequest)req;
        HttpServletResponse response = (HttpServletResponse)resp;
        HttpSession session = request.getSession();
        if (session.getAttribute("name") != null){
            chain.doFilter(req, resp);
        }else {
            System.out.println("do filter");
            RequestDispatcher dispatcher = request.getRequestDispatcher("page.html");
            dispatcher.include(request,response);
        }
    }

    public void init(FilterConfig config) throws ServletException {

    }

}
